Effects of different signal peptides on the secretion of human-mouse chimeric CMV-IgM / 生物工程学报
Chinese Journal of Biotechnology
; (12): 1223-1231, 2020.
Article
em Zh
| WPRIM
| ID: wpr-826855
Biblioteca responsável:
WPRO
ABSTRACT
In order to prepare human-mouse chimeric cytomegalovirus-immunoglobulin M (CMV-IgM) in vitro and study the effects of different signal peptides on the secretion of CMV-IgM, genes were amplified from hybridoma cell line using RLM-RACE to construct the expression vector of chimeric CMV-IgM. Then, the signal peptide of SigF itself was replaced by five different secreted signal peptides (SigA-SigE) by PCR method, and the CHO cell was chosen as host cell for in vitro expression. SDS-PAGE, SEC-HPLC and ELISA experiments were carried out to evaluate the protein expression level and immunoreactivity of the purified CMV-IgM. A 910 kDa recombinant protein was successfully prepared and signal peptides (SigA-SigE) had an increased expressed CMV-IgM, which were 6.72, 5.19, 1.44, 1.85 and 1.98 times higher than that of the CMV 6# cell signal peptide SigF. In summary, this work provides a theoretical basis for the development of human-mouse chimeric CMV-IgM, and a novel route to increase the expression level of CMV-IgM.
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Índice:
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Assunto principal:
Proteínas Recombinantes de Fusão
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Sinais Direcionadores de Proteínas
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Imunoglobulina M
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Ensaio de Imunoadsorção Enzimática
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Expressão Gênica
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Citomegalovirus
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Alergia e Imunologia
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Genética
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Anticorpos Antivirais
Limite:
Animals
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Humans
Idioma:
Zh
Revista:
Chinese Journal of Biotechnology
Ano de publicação:
2020
Tipo de documento:
Article